Chapter 14_Population_and_Urban_Life

Chapter 14_Population_and_Urban_Life - Chapter 14...

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Chapter 14 – Population & Urban Life - Study guide - Demography the study of human population from 200,000 years b.c. until around 2,000 b.c. the human population grew to 20 million. by 1 a.d. = 200 million the current world population is: - 7.46 billion persons, growing 80 - 100 million persons annually demography - interested in causes and consequences of growth - let’s examine some of the discipline’s more basic concepts - Fertility rates fertility is the incidence of childbearing in a society’s population “fecundity” is the potential for childbearing crude birth rate the number of live births in a given year for every thousand people in a population “crude” because it takes into account everybody, not just women of childbearing age Crude because it takes into account everyone Number of births divided by population divided by 1000 Refind birth rate is more accurate, limits it to women at child bearing age Because of technology women are having children later - Mortality rates the incidence of death in a population Crude Death Rate: number of deaths in a year for every 1,000 persons, # of deaths/population times 1,000 Infant Mortality Rates : number of deaths among infants under one year for each 1,000 live births Life Expectancy: average life span for males and females (1992: 73 for males, 79 for females) (2014: 77.4 for males, 82.2 for females) medicine, we know what to eat now men are work in riskier business when a women conceives they know its their child, men could have thousands of kids technically, women are expected to be the longer care giver because they invested 9 months in the child, constant pressure for men to be the provider of the family women are more likely to want to get the stress out of their systems right away, men internalize that stressor and affect them for a really long period of time gender discrepancy and the age is increasing for life expectancy our society is more competitive than it has ever been before so maybe there is a ceiling - Migration the movement of people in and out of a specified territory
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voluntary migration - usually due to economic push and pull factors - economics, better climate involuntary migration - forced migration due to war or other social conflict - natural disaster, terrorism immigration - movement into a territory emigration - movement out of a territory rates - in-migration rate o the number entering for every 1,000 people o 1 million a year in US - out migration rate o number leaving for every 1,000 people in the territory o 200,000 a year in US - net-migration rate o difference between in- and out-migration numbers o population is growing by 800,000 every year in US Migration is increasing Affects population and cultural diversity - Sex Ratio number of males compared to number of females in the united states there are approximately 96 males to 100 females because women usually outlive men in India there were approximately 107 males for every 100 females -
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